Machine for producing blanks for nails, hook-nails, hooks, or the like.



J. H. DAHI GREN. h MACHINE FOR PRODUCING BILANKSVFOR NAILSfHOOK NYALLS,HOOKS, joR THE LIKE. I v APPLICATION FlLED'JAN. 8-, 1913.

' 4 SHEETS-SHEE T-l.

1171;506'. Patent ed Feb. 15, 1916.

LU; Zn sses. Ina/anion THELOLUMBXA PLANOORAPH 60.. WASHINGTON D c J. H.DAHLGREN. I v MACHINE FORPRQDUCING BLANKS FOR NA ILSyHOOK NAlLS, HOOKS,OR THE LlKE.

APPLICATION FILED JAN. 8,1913- v,

Patented Feb. 15,1916,

4 SHEETS-SHEET 2- qm @w Wifnesses THE COLUMBIA PLM lOaRAPfl cu., \vAsmNs'roN. n. c.

J. H. DAHLGREN.

MACHINE FOR PRODUCING BLANKS FOR NAILS, HOOK NAILS, HOOKS, OR THE LIKE.APPLICATION FILED JAN. 8. 1913.

1,171,506. w I Patented Feb.15,1916.

4 SHEETS-SHEET a.

U/Zlnesses. jnvenl br.

THE COLUMBIA PLANOGRAPH CO" WASHINGTON. D- C I. H. DAHLGREN.

CHINE FOR PRODUCING BLANKS FOR NAILS, HOOK NAILSIHOOKS, OR THE LIKE.

APPLICATION FILED JAN. 8. I9I3- I 4 SHEETS-SHEET 4.

THE COLUMBIA PLMZIOGRAPH 4:12., \VASHINGTON, D. c.

Patnted Feb. 15,1916.

JOHAN IHIIILMER DAH GREN, or. .s q mom, sWED ENQ 4 MACHINE FOB. raonucmoBLANKS Boa unns rroo lva ts, nool sifoie'rnn LIKE.

To all whom it may concern:

earn, a subject of the King of Sweden, residing at Stockholm, in theKingdom of Sweden, have invented new and useful, Im-

provements in Machines for Producing Blanks for Nails, Hook-Nails,Hooks, or

the like, of which the following is a speeification, referencebeing hadto the drawings accompanying and forming ap'art hereof.

This invention relateslto a machine for producing blanks for nails,hooks nails, hooks or the like, and more specially, but not exclusively,to producing blanks, the cross section of which increases from one endof the blank to, the other one, the material for the blanks being.suitably introduced into the machine in the form of bars or Wire andheated to a suitable degree. The further working of the blanks, asforinstan'ce. the

forming of heads,.etc.,will be effected afterwa rdin a suitable machineadaptedto that. a,

' 1 1 of themachine. By means of aworrngear 2 and a bevel gear 3 themain shaft 1. turns" purpose. I In carrying thepresent'method into .ef-

feet the material is introduced into the ma:

chine in a well-known manner in the form of barsor wire and worked'uponfrom different sides by blows from rotary rollers cooperating in pairssuitably arranged in groups and working the-material alternately while 1the rollers are moving in circular paths around parallel or nearlyparallel shafts arranged at opposite sides of the blank. The said methodconsists chiefly in that one or both of the shafts, around which thecotiperating pairs of rollers'aremoving,

move in directions toward and from" the blank, simultaneously with theworking thereupon by the rollers, thereby effecting a.

varying cross section of the blank during; When the blank is thus,fini'shed ing pairs and the axes of the shafts of the.

corresponding holders lie in the same plane when a roller of each pairpresses against plan view of the machine.

7 Specificafidn of L t r Past Patented Feb."15,191 6.

ApplicaltionfiledJ'anuaryS,1915.1 Serial imfveogsa I 1the.,blank-.-':-.One or more of the rotating. Be it known that I, JoHANHILMER DAHL- to move in directions toward and from the.

material duringworking, thus effecting the above-named 'varyingijcross'section of the holders'of the rollers. I

' In theaccompanying drawings a machine is'shown adapted to carry themethod .into

effect.

Figure 1' is an end View of the machinef Fig. 2 is' a vertical sectionon the broken line 'A'BCD of Fig; 1. Fig. 3 is a. vertical section online of Fig.2. Fig;

4 shows two holders viewed from above and i Fig.1 5 same holders viewedfrom 'theside. i

Figl'6shows a finished blank. Fig. 7 is a Referring to the drawlngs, themainshaft ofthe machine journaledin the frame the end face of the camdisk 5a three armed lever 7,8, is-caused toperform an oscillatory 1movement, the reciprocating movement of the arms 8 being transmitted bya rod 9 to a frame 10 arranged to-slide on the main-" shaft l. conicaltoothed wheel 11 movable along themain shaft 1, and splined thereto,

and the shaft 25' 'of another conical toothed wheel l2i gearing with"the wheel 11; are

journal'e'd in the frame" 10, :wherebv the wheel 12 is cfaused torotate. wheel 13 is fastened to the shaft-Land ar-- ra.nged.,;tofmeshwith fourth bevel Wheel A third bev'el 14 fastened to the shaft26-=journ'aled' in the i- ByLm'eansof-lever ,16 oscillating on a stationary" pivot '15 and provided with a projectiorrl'? or'the likeengaging the 'periphervi of the carndisk 6, a rod.18, abellcrank lever19, 20' and a? r0d21. a crank 22 is caused to .oscillate. Thewshaft 22-of the crank 22 is provided with another crank 27 the crankzpin' 28 .ofwhich is journaled in a block 23- sliding between. guides 24..at-

tached to a frame 23 which is movable on pivots 24L by means oftllQStLlClCOIlIlBC-x: -.tions*caused to oscillate on sald p1vots24.

The tools effecting the working of the material consist of rollers 36 orthe like rotatably mounted on pins. As shown in the drawings, saidrollers are mounted in holders preferably in the form of rhombic diskswith rounded corners.

The holders of the rollers arearranged in two groups, the holders and 26of one group rotating and working the material in the same horizontalplane, whereas the holders 27 and 28 of the other group rotate and workthe material in the same vertical plane. The holders 25 and 26 aremounted on rotatable shafts, the shaft 25 of the holder 25 beingjournaled in the frame 10 and at the same time forming the shaft of thewheel 12, while the shaft 26' of the holder 26 forming the shaft of thewheel 14 is journaled in the machine frame. As shown in Fig. 2, theholders 25 and 26 preferably are formed in one piece with the wheels 12and 14 respectively. The shaft 29 of the holder 27 is journaled in theoscillat ing frame 23 and rotated by means of the toothed spur wheel 30mounted on the main shaft 1 and the intermediate toothed wheels 31, 32and 33, the last named 33 of which is attached to the shaft 29, whilethe wheel 32 is concentric with the pivots 24E of the frame 23. Thus itis evident that when the frames 10 and 23 are moving in the manner abovedescribed, the shafts of the holders 25 and. 27 will move in directionstoward and from the shafts of the holders 26 and 28, said last namedshafts remaining stationary. On account thereof, the rollers of theholders 25 and 27,'when lying in the same plane as the rollers of theholders 26 and 28 respectively, will assume positions nearer to orfarther from the last named rollers, and consequently, the materialinserted between cooperating rollers will obtain a greater or smallercross section according as the distance between the cooperating rollersincreases or diminishes.

As stated above, the holders of the rollers consist of disks preferablyof about rhombic form with rounded corners. In notches in the ends ofsaid disks are placed preferably cylindrical rollers 36, looselymounteither side of the material always strike the same simultaneously.The two pairs of holders 25, 26 and 27, 28 are so arranged, that theytreat the material successively,

that is to say, when the one pair, for inthe axes of the two rollers ofthe one holder 25 is parallel to the plane through the axes of the tworollers of the other holder 26. Thereby the result is attained, that therollers of the different groups of holders can work the material in thesame cross-section thereof, without interfering with one another.

The finished blank is separated from the material introduced in themachine by means of tools 39 and 40 attached to the holders 25 and 26respectively. The guide 37 is mounted on a bar 44 connected to the frame10, on account' whereof, when the frame is moving on the shaft 1, theguide 37 and the material will follow the movements of the frame. \Vhenbeing operated upon, the material is fed forward through the guide 37 ina plane through all the rollers (Fig. 5), the distance betweencooperating rollers, when striking the material simultaneously,corresponding to the cross section of the blank. WVhen the rollers havefinished theworking of the blank the above named movement of theguide-37 takes place so that the blank will be moved out of theaforesaid plane to the right (Fig. 5) between the tools 39 and 40, andat the same time the rollers as Well as the tools are moved closetogether to the position shown in Fig. 5, whereby the finished blank inthe form shown in Fig. 6 will be separated from the material.

I claim:

In a machine for producing blanks for nails hook nails, hooks or thelike, the combination of rotatable rollers arranged at opposite sides ofthe material and adapted to move in circular paths, holders for saidrollers, shafts for said holders, means for automatically moving certainof said shafts toward and away from the material during the operation,and means for separating the finished blank from the remainder of thematerial.

JOHAN HILMER DAHLGREN. Witnesses I K. E. WVIBERG, KARL RUnEsKoG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

